linux:notes:x86_energy_perf_policy
x86_energy_perf_policy
watch --interval '0.5' grep \'cpu MHz\' '/proc/cpuinfo'
- Check
sudo x86_energy_perf_policy
- Max Performance
sudo x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force
Scripts
TuneD
- Automatic power-management like
tlp
- Required to remove
tuned
so it doesn't override below udev rule
sudo dnf remove 'tuned'
AC
sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/ac-power.sh' && sudo restorecon -F -I -v '/etc/udev/scripts.d/ac-power.sh' && sudo chmod +x '/etc/udev/scripts.d/ac-power.sh'
#!/bin/bash # AC x86_energy_perf_policy --all 'performance' --turbo-enable '1' --force # End
'/etc/udev/scripts.d/ac-power.sh'
Battery
sudo mkdir -p '/etc/udev/scripts.d' && sudo -e '/etc/udev/scripts.d/battery-power.sh' && sudo restorecon -F -I -v '/etc/udev/scripts.d/battery-power.sh' && sudo chmod +x '/etc/udev/scripts.d/battery-power.sh'
#!/bin/bash # Battery x86_energy_perf_policy --all 'balance-power' --turbo-enable '0' --force # End
'/etc/udev/scripts.d/battery-power.sh'
udev Rule
sudo -e '/etc/udev/rules.d/99-power.rules' && sudo restorecon -F -I -v '/etc/udev/rules.d/99-power.rules' && sudo udevadm control --reload
# AC SUBSYSTEM=="power_supply", ATTR{online}=="1", RUN+="/etc/udev/scripts.d/ac-power.sh" # Battery SUBSYSTEM=="power_supply", ATTR{online}=="0", RUN+="/etc/udev/scripts.d/battery-power.sh" # End
Check
- If plugged-in, should report something like
Write to unrecognized MSR 0x770 by x86_energy_perf
1-second/early boot
sudo dmesg | grep 'MSR'
/usr/local/www/wiki/data/pages/linux/notes/x86_energy_perf_policy.txt · Last modified: by Sean Rhone